This graph shows the maximum solubility of four different solids, in grams per 100 milliliters of water (g/100 ml).
at 60°c, what is the minimum number of grams of kbr that must be added to 100 grams of water to produce a supersaturated
solution?
a.80 grams
b.> 88 grams
c.> 90 grams
d. between 88 and 90 grams

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final

4. if you were an astronaut on the moon, what would you experience? what would you see from your perspective?

An ideal otto cycle has a compression ratio of 10.5, takes in air at 90 kpa and 40°c, and is repeated 2500 times per minute. using constant specific heats at room temperature, determine the thermal efficiency of this cycle and the rate of heat input if the cycle is to produce 90 kw of power.